A pneumatic screw press device for a rolling mill

Abstract

The present application relates to a kind of rolling mill pneumatic screw pressing device, it is characterized in that: including pneumatic screw transmission mechanism, pressing fixed connection mechanism, wherein: the former includes rotary cylinder body (2), rotary cylinder internal rotary head (3), cylinder adapter (8), cylinder adapter claw (7), rotary cylinder inlet and outlet (22) and rotary cylinder pressure regulating screw (21), rotary cylinder connects internal hexagon bolt (1), middle connecting plate (9), cylinder adapter connecting bolt (4), the latter includes cover plate (14), nut locking rotary sleeve (5), pressing screw rod (20), pressing screw rod opening slot (19), fixed sleeve (15), fixed sleeve connecting bolt (12) and fixed sleeve threaded hole (16), positioning screw (18), fixed sleeve inner cavity (17), pressing plate (11), pressing plate fastening bolt (10), sliding bearing seat pressing plate connecting bolt (13), with reasonable structure, Small space occupation, safe and stable, high efficiency, low cost and the like characteristics.

Description

Technical Field

[0001] This invention relates to the field of magnetic separation technology for oil-bearing rolling mills and other similar equipment, and in particular to a pneumatic screw pressing device for rolling mills. Background Technology

[0002] As is well known, there are many types of hydraulic crushers and other oil-based rolling mills both domestically and internationally. Among the most commonly used crushers and rolling mills are double-roll and twin-roll rolling mills. Currently, the installation, testing, and pre-treatment of rolling mills are generally carried out on the second floor. This installation method places higher demands on the equipment's vibration. Excessive vibration will impose higher requirements on the overall building structure on the second floor and increase construction costs. In addition to the vibration generated by the dynamic balance of the rolling rolls themselves, the vibration of square tile rolling mills also comes from the equipment itself. This vibration is due to the presence of gaps within the equipment. These gaps, during the rotation of the rolling rolls, will impact the overall production process and cause vibration. The main gap in current rolling mills lies between the sliding bearing housing and the bearing housing cover plate. Because rolling mills require hydraulic cylinders to move the rolls back and forth during roll closing and opening, this movement necessitates a certain gap to ensure unobstructed movement. This gap generates vibration when the rolling rolls rotate, affecting the overall vibration level of the equipment and ultimately impacting the overall layout and cost. In short, gaps exist between the sliding bearing housing and the bearing housing cover plate in all types of rolling mills currently on the market, causing vibration in the hydraulic rolls during operation and affecting the overall performance of the equipment. Therefore, there is an urgent need to research and develop a pneumatic system for rolling mills that can reduce equipment vibration after the sliding bearing housing closes the rolls. Screw clamping device. Summary of the Invention

[0003] The purpose of this invention is to improve upon existing technologies, overcome their shortcomings and defects, and provide a solution to the problem of vibration in oil-filled rolls caused by gaps between the sliding bearing housing and the bearing housing cover plate in a rolling mill. Specifically, this invention provides a pneumatic screw clamping technology to reduce and mitigate vibration in oil-filled rolls by eliminating the gaps between the sliding bearing housing and the bearing housing cover plate. This also reduces the problem of excessive vibration in the equipment after the sliding bearing housing is closed. Furthermore, this invention is a pneumatic screw clamping device for rolling mills that is structurally sound, safe and stable, highly efficient, and low in cost.

[0004] The technical solution adopted by this invention to solve its technical problem is: a pneumatic screw clamping device for a rolling mill, characterized in that: it includes a pneumatic screw transmission mechanism and a clamping and fixing connection mechanism. The clamping and fixing connection mechanism is disposed on the sliding bearing seat pressure plate 23 of the sliding bearing seat 24 of the rolling mill, and the pneumatic screw transmission mechanism is disposed on the upper part of the clamping and fixing connection mechanism. The pneumatic screw transmission mechanism includes a rotary cylinder body 2, a rotary cylinder internal rotating head 3 disposed at the lower middle position of the rotary cylinder body 2, a cylinder adapter 8 disposed on the rotary cylinder internal rotating head 3, a cylinder adapter tooth 7 disposed on the cylinder adapter 8, a rotary cylinder inlet / outlet port 22 disposed on the rotary cylinder body 2, and a rotary cylinder pressure adjusting screw 21. The rotary cylinder is connected by hexagon socket head cap bolt 1, intermediate connecting plate 9, and cylinder adapter connecting bolt 4. The rotary cylinder body 2 and the rotary cylinder internal rotating head 3 located at the middle position of the lower part of the rotary cylinder body 2 are fixedly connected by cylinder adapter connecting bolt 4. The rotary cylinder body 2 is fixedly connected to the pressure plate 11 of the clamping and fixing connection mechanism by the rotary cylinder connecting hexagon socket head cap bolt 1 and intermediate connecting plate 9, as shown in 1-8.

[0005] The clamping and fixing connection mechanism includes a cover plate 14, a nut locking rotating sleeve 5 located in the middle of the cover plate 14, a clamping screw 20 located inside the nut locking rotating sleeve 5, a clamping screw opening groove 19 located on the clamping screw 20, a fixing sleeve 15 located on the outer periphery of the nut locking rotating sleeve 5, a fixing sleeve connecting bolt 12 and a fixing sleeve threaded hole 16 located at the upper shoulder and bottom of the fixing sleeve 15 respectively, a positioning screw 18 located inside the fixing sleeve threaded hole 16, a fixing sleeve inner cavity 17 located on the inner periphery of the fixing sleeve 15, a pressure plate 11, a pressure plate fastening bolt 10, and a sliding bearing seat pressure plate connecting bolt 13. The pressure plate 11 and the cover plate 14 are fixedly connected by the pressure plate fastening bolt 10, and the cover plate 14 is fixedly connected to the sliding bearing seat pressure plate 23 on the sliding bearing seat 24 of the rolling mill by the sliding bearing seat pressure plate connecting bolt 13, as shown in 1-8.

[0006] The nut locking rotating sleeve 5 of the clamping and fixing connection mechanism is provided with an inner trapezoidal thread and a shoulder on its inner side and upper outer side, respectively. The outer circumference and lower part of the clamping screw 20 are provided with an outer trapezoidal thread and a clamping screw opening groove 19, respectively. The shoulder on the upper outer side of the nut locking rotating sleeve 5 is fitted with the lower part of the shoulder provided on the pressure plate 11 and the upper part of the shoulder provided on the fixing sleeve 15 and is fixedly connected by the fixing sleeve connecting bolt 12. Furthermore, the inner trapezoidal thread of the nut locking rotating sleeve 5 and the corresponding outer trapezoidal thread provided on the outer circumference of the clamping screw 20 engage with each other to perform a fixed position rotation action, as shown in 1-8.

[0007] The pneumatic screw drive mechanism has two cylinder adapter teeth 7 on the cylinder adapter 8, which are inserted into two corresponding nut locking rotating sleeve slots 6 on the nut locking rotating sleeve 5 of the clamping and fixing connection mechanism to drive the nut locking rotating sleeve 5 to rotate in a fixed position, as shown in 1-8.

[0008] The working process and principle of this technology are as follows: First, after compressed air enters the rotary cylinder inlet / outlet 22, the rotary head 3 inside the rotary cylinder body 2 rotates at a certain angle. While the rotary head 3 rotates, it drives the rotary cylinder adapter 8 to rotate via the cylinder adapter connecting bolt 4. When the cylinder adapter 8 rotates, its cylinder adapter teeth 7 also rotate. Because the cylinder adapter teeth 7 and the nut locking rotary sleeve groove 6 on the nut locking rotary sleeve 5 have a concave-convex fit, the nut locking rotary sleeve 5 also rotates. Simultaneously, the nut locking rotary sleeve is fixed between the fixed sleeve 15 and the pressure plate 11 via the fixed sleeve connecting bolt 12. Thus, the nut locking rotary sleeve 5 can only rotate in a fixed position. Second, because the nut locking rotary sleeve 5 has an internal trapezoidal thread... The external trapezoidal threads on the clamping screw 20 mesh with each other, so when the nut locks the rotating sleeve 5 and rotates in the fixed position, the clamping screw 20 has a vertical stroke due to the meshing of its external trapezoidal threads. Thirdly, because the positioning screw 18 presses against the clamping screw opening groove 19 through the threaded hole 16 on the fixed sleeve 15, it plays a limiting role, so that the clamping screw 20 will not rotate or rise and fall during the lifting stroke, but will rise and fall vertically. The sliding bearing seat pressure plate 23 can only move up and down within a limited distance through the sliding bearing seat pressure plate connecting bolt 13. In this way, when the clamping screw 20 descends vertically, it will press against the sliding bearing seat pressure plate 23, keeping it in a pressed state at all times. When the clamping screw 20 rises vertically, there will be no pressing force on it, resulting in a free state. When the equipment needs to close the rolls, a hydraulic cylinder is used to push the sliding bearing seat 24. After the sliding bearing seat 24 moves into place, compressed air needs to be introduced into the pneumatic screw clamping device of the rolling mill through the air inlet and outlet 22 of the rotary cylinder. This causes the rotating head 3 inside the rotary cylinder body 2 to rotate at a certain angle. When the rotating head 3 inside the rotary cylinder rotates, it will drive the nut locking rotating sleeve 5 to rotate. However, because the nut locking rotating sleeve 5 is fixed to the fixed sleeve 1 by the fixed sleeve connecting bolt 12, The clamping screw 20 and the pressure plate 11 can only rotate in a fixed position. At the same time, the outer trapezoidal thread of the clamping screw 20 meshes with the inner trapezoidal thread inside the locking sleeve 5. This causes the clamping screw 20 to move downward. Because the positioning screw 18 is positioned by pressing against the opening groove 19 of the clamping screw through the threaded hole 16 on the fixed sleeve 15, the clamping screw 20 will not rotate during its descent but will descend vertically. When the clamping screw 20 descends, it will press against the sliding bearing seat pressure plate 23 and descend together. The sliding bearing seat pressure plate 23 will then act on the sliding bearing seat 24, giving the sliding bearing seat 24 a downward pressure.When the rollers are closed, the sliding bearing seat pressure plate 23 applies a downward pressure to the sliding bearing seat 24, thus eliminating the gap between the sliding bearing seat 24 and the cover plate 14 and reducing equipment vibration, as shown in Figure 6. When roller separation is required, the air source inlet and outlet are reversed by the external reversing valve, and the rotating head 3 inside the rotary cylinder will rotate in the opposite direction by a certain angle, thereby ultimately raising the clamping screw 20. After the clamping screw 20 rises, it will separate from the sliding bearing seat pressure plate 23. At the same time, because the sliding bearing seat pressure plate 23 can only move up and down within a limited distance due to the sliding bearing seat pressure plate connecting bolt 13, there is no downward pressure between the sliding bearing seat pressure plate 23 and the sliding bearing seat 24. Thus, the sliding bearing seat 24 moves under the action of the hydraulic cylinder.

[0009] The beneficial effects of this technology, or its characteristics compared with existing technologies, are as follows: the use of pneumatic screw clamping technology can solve the gap between the sliding bearing seat and the bearing seat cover plate of the rolling mill, thereby reducing and mitigating the vibration of the oil roll during operation, reducing the problem of large vibration of the equipment after the sliding bearing seat closes the roll, and also features reasonable structure, small space occupation, safety and stability, high efficiency, and low cost. Attached Figure Description

[0010] Figure 1 is a front view of the present invention.

[0011] Figure 2 is a view from direction A in Figure 1.

[0012] Figure 3 is an assembly diagram of the nut locking rotary sleeve 5 and the cylinder adapter 8 of the present invention.

[0013] Figure 4 is a cross-sectional view of BB in Figure 3.

[0014] Figure 5 is an assembly diagram of the positioning screw 18 and the clamping screw 20 of the present invention.

[0015] Figure 6 is a top view of Figure 5.

[0016] Figure 7 is an assembly diagram of the fixing sleeve 15 and the positioning screw 18 of the present invention.

[0017] Figure 8 is a schematic diagram of the installation and connection position relationship of the invention.

[0018] In the diagram: 1. Rotary cylinder connecting hexagon socket bolt; 2. Rotary cylinder body; 3. Rotary cylinder internal rotating head; 4. Cylinder adapter connecting bolt; 5. Nut locking rotating sleeve; 6. Nut locking rotating sleeve slot; 7. Cylinder adapter toothed claw; 8. Cylinder adapter; 9. Intermediate connecting plate; 10. Pressure plate fastening bolt; 11. Pressure plate; 12. Fixed sleeve connecting bolt; 13. Sliding bearing seat pressure plate connecting bolt; 14. Cover plate; 15. Fixed sleeve; 16. Fixed sleeve threaded hole; 17. Fixed sleeve inner cavity; 18. Positioning screw; 19. Pressure screw opening slot; 20. Pressure screw; 21. Rotary cylinder pressure adjusting screw; 22. Rotary cylinder inlet / outlet; 23. Sliding bearing seat pressure plate; 24. Sliding bearing seat. Detailed Implementation

[0019] As shown in Figures 1-8, a pneumatic screw clamping device for a rolling mill is characterized by comprising a pneumatic screw transmission mechanism and a clamping and fixing connection mechanism. The clamping and fixing connection mechanism is disposed on the sliding bearing seat pressure plate 23 of the sliding bearing seat 24 of the rolling mill, and the pneumatic screw transmission mechanism is disposed above the clamping and fixing connection mechanism. The pneumatic screw transmission mechanism includes a rotary cylinder body 2, a rotary cylinder internal rotating head 3 disposed at the lower center of the rotary cylinder body 2, a cylinder adapter 8 disposed on the rotary cylinder internal rotating head 3, a cylinder adapter tooth 7 disposed on the cylinder adapter 8, a rotary cylinder inlet / outlet port 22 disposed on the rotary cylinder body 2, and a rotary cylinder pressure adjusting screw 21. The rotary cylinder is connected by hexagon socket head cap bolt 1, intermediate connecting plate 9, and cylinder adapter connecting bolt 4. The rotary cylinder body 2 and the rotary cylinder internal rotating head 3 located at the middle position of the lower part of the rotary cylinder body 2 are fixedly connected by cylinder adapter connecting bolt 4. The rotary cylinder body 2 is fixedly connected to the pressure plate 11 of the clamping and fixing connection mechanism by the rotary cylinder connecting hexagon socket head cap bolt 1 and intermediate connecting plate 9, as shown in 1-8.

[0020] The clamping and fixing connection mechanism includes a cover plate 14, a nut locking rotating sleeve 5 located in the middle of the cover plate 14, a clamping screw 20 located inside the nut locking rotating sleeve 5, a clamping screw opening groove 19 located on the clamping screw 20, a fixing sleeve 15 located on the outer periphery of the nut locking rotating sleeve 5, a fixing sleeve connecting bolt 12 and a fixing sleeve threaded hole 16 located at the upper shoulder and bottom of the fixing sleeve 15 respectively, a positioning screw 18 located inside the fixing sleeve threaded hole 16, a fixing sleeve inner cavity 17 located on the inner periphery of the fixing sleeve 15, a pressure plate 11, a pressure plate fastening bolt 10, and a sliding bearing seat pressure plate connecting bolt 13. The pressure plate 11 and the cover plate 14 are fixedly connected by the pressure plate fastening bolt 10, and the cover plate 14 is fixedly connected to the sliding bearing seat pressure plate 23 on the sliding bearing seat 24 of the rolling mill by the sliding bearing seat pressure plate connecting bolt 13, as shown in 1-8.

[0021] The nut locking rotating sleeve 5 of the clamping and fixing connection mechanism is provided with an inner trapezoidal thread and a shoulder on its inner side and upper outer side, respectively. The outer circumference and lower part of the clamping screw 20 are provided with an outer trapezoidal thread and a clamping screw opening groove 19, respectively. The shoulder on the upper outer side of the nut locking rotating sleeve 5 is fitted with the lower part of the shoulder provided on the pressure plate 11 and the upper part of the shoulder provided on the fixing sleeve 15 and is fixedly connected by the fixing sleeve connecting bolt 12. Furthermore, the inner trapezoidal thread of the nut locking rotating sleeve 5 and the corresponding outer trapezoidal thread provided on the outer circumference of the clamping screw 20 engage with each other to perform a fixed position rotation action, as shown in 1-8.

[0022] The pneumatic screw drive mechanism has two cylinder adapter teeth 7 on the cylinder adapter 8, which are inserted into two corresponding nut locking rotating sleeve slots 6 on the nut locking rotating sleeve 5 of the clamping and fixing connection mechanism to drive the nut locking rotating sleeve 5 to rotate in a fixed position, as shown in 1-8.

Claims

1. A pneumatic screw pressing device for a billet rolling mill, characterized in that: The device includes a pneumatic screw drive mechanism and a clamping and fixing connection mechanism. The clamping and fixing connection mechanism is installed on the sliding bearing seat pressure plate (23) of the sliding bearing seat (24) of the rolling mill. The pneumatic screw drive mechanism is installed on the upper part of the clamping and fixing connection mechanism. The pneumatic screw drive mechanism includes a rotary cylinder body (2), a rotary cylinder internal rotating head (3) installed at the middle position below the rotary cylinder body (2), a cylinder adapter (8) installed on the rotary cylinder internal rotating head (3), and a cylinder adapter (8) installed on the cylinder adapter (8). The rotary cylinder body (2) is equipped with a toothed jaw (7), a rotary cylinder inlet / outlet (22) and a rotary cylinder pressure regulating screw (21), a rotary cylinder connecting hexagonal bolt (1), an intermediate connecting plate (9), and a cylinder adapter connecting bolt (4). The rotary cylinder body (2) and the rotary cylinder internal rotating head (3) located at the middle position below the rotary cylinder body (2) are fixedly connected by the cylinder adapter connecting bolt (4). The rotary cylinder body (2) is connected by the rotary cylinder connecting hexagonal bolt (1) and the intermediate connecting plate. (9) Fixed to the pressure plate (11) of the clamping and fixing connection mechanism; the clamping and fixing connection mechanism includes a cover plate (14), a nut locking rotating sleeve (5) set in the middle position of the cover plate (14), a clamping screw (20) set inside the nut locking rotating sleeve (5), a clamping screw opening groove (19) set on the clamping screw (20), a fixing sleeve (15) set on the outer periphery of the nut locking rotating sleeve (5), and fixing sleeve connecting bolts (12) and fixing sleeves respectively set at the shoulder position on the upper part and the bottom of the fixing sleeve (15). The sleeve thread hole (16), the positioning screw (18) provided in the fixed sleeve thread hole (16), the fixed sleeve inner cavity (17) provided in the inner circumference of the fixed sleeve (15), the pressure plate (11), the pressure plate fastening bolt (10), and the sliding bearing seat pressure plate connecting bolt (13) are provided. The pressure plate (11) and the cover plate (14) are fixedly connected by the pressure plate fastening bolt (10), and the cover plate (14) is fixedly connected to the sliding bearing seat pressure plate (23) on the sliding bearing seat (24) of the rolling mill by the sliding bearing seat pressure plate connecting bolt (13).

2. The pneumatic screw pressing device for a rolling mill as described in claim 1, characterized in that: The nut locking rotating sleeve (5) of the clamping and fixing connection mechanism is provided with an inner trapezoidal thread and a shoulder on its inner side and upper outer side, respectively. The outer circumference and lower part of the clamping screw (20) are provided with an outer trapezoidal thread and a clamping screw opening groove (19), respectively. The shoulder on the upper outer side of the nut locking rotating sleeve (5) is fitted with the shoulder on the pressure plate (11) and the shoulder on the fixed sleeve (15) and fixedly connected by the fixed sleeve connecting bolt (12). The inner trapezoidal thread of the nut locking rotating sleeve (5) and the corresponding outer trapezoidal thread on the outer circumference of the clamping screw (20) mesh with each other to perform a fixed position rotation action.

3. The pneumatic screw pressing device for a rolling mill as described in claim 1 or 2, characterized in that: The cylinder adapter teeth (7) on the pneumatic screw drive mechanism are two, and they are inserted into the corresponding slots (6) of the nut locking rotating sleeve (5) of the clamping and fixing connection mechanism to drive the nut locking rotating sleeve (5) to rotate in a fixed position.

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